接口尺寸： 螺纹,法兰（mm） 加工定制： 是
防护等级： ip65 测量范围： 0-1（kpa）
类型： trafag,8711,8731,8741,8751,sf6气体密度变送,sf6气体密度控制器 防爆等级： ip65
型号： trafag,8711,8731,8741,8751,sf6气体密度变送,sf6气体密度控制器 测量介质： sf6气体
精度等级： 1 品牌： trafag/瑞士
输出信号： 4-20（ma） 电源电压： 4（v）
trafag,8711,8712,8731,8741,8750,8751,sf6气体密度变送,sf6气体密度控制器
trafag,8711,8712,8731,8741,8750,8751,sf6气体密度变送,sf6气体密度控制器
   产品规格：
   适用于sf6和其它气体
   测量原理：参考室气体
    测量范围：0...1mpa (0...1000 kpa)
   输出：微动开关触点
   较同类产品更精确
良好的抗振性
低温下没有误报警
不锈钢传感器
分立的隔离电路
环境温度：-40 ... +80°c
介质温度-40 ...+80°c
application
    high voltage technology
maincharacteristics
   gasdensity controller for sf6 and othergases
   principle:       reference gasmeasurement
    measuring range: 0...1 mpa (0...1000 kpa)
   output:         floating change-over contact
    switch point:    adjustment infactory
mainfeatures
    exactswitching following isochore
?  excellent vibration resistance
?  no false alarms at low temperatures
?  stainless steel sensor
?  independent, galvanically separated circuits
orderinginformation
specifications
maincharacteristics
   principle:       r eference gasmeasurement
    measuring range: 0...1 mpa (0...1000 kpa)
   output:         floating change-over contact
    switch point:    adjustment infactory
accuracy (@20°c)
    switching differential typ.
      microswitch 20: <15 kpa
      microswitch 28/83: <10 kpa
    accuracy of the reference miroswitch from thereference isochore (see page 4)
      -30...+50°c: <10 kpa(fillingpressure: <650 kpa)
      -30...+50°c: <12 kpa(fillingpressure: <1 mpa)
microswitch
   rating:                  see table
    resistance of insulation: > 2 mω
    dielectricstrength:      2 kv terminal ground
    life time (mechanical)
      microswitch20:         1 mio.cycles
      microswitch28/83:      10 mio. cycles
    max. difference from the lowest to thehighest
      switchingpoint:        130kpa
electricalconnection
    male electricalplug:     din 43650-a
    female electrical connector
      cable-ø:               6...13 mm
      terminalscrew:         0.5...1.5mm2
environmentalconditions
    ambienttemperatur:       -40....+80°c
    mediatemperature        -40....+80°c
    protection:
     8711/50/51:            ip54
     8712/21/31/41:         ip00
   humidity:                max. 95 % relative
    vibration
      min. difference from switch point: 5kpa
      20...80hz:            4 g
   shock:                   50g/ 11ms
security
    leakage ofreference chamber: < 0.5 kpa/ year
                                 (5·10-10 kpa·i·s-1)
   service:                     none,switch point checking after 5 years
    reference chamber leakage tests: with helium gasin vacuum process
                                 and integral leakage test in overpressure process
mechanicaldata
    material
      sensor:
        housing:                1.4435 (aisi316l)
        filling:                gas
     housing:                   almgsi1, anodized
      male electricalplug:       pa, polyamid
   weight:                      ~ 350 g (8711)
electricaldata switch
   electrical connection
   dimensions
   accessories
欢迎致电trafag,8711,8712,8731,8741,8750,8751,sf6气体密度变送,sf6气体密度控制器
电话:010-5166991256291930
传真：010-51669912
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